Pipe wrapping machine



y PIPE wRAPPING MAQHEINE y Filed Jan. 1,6, 1935 s Sheets-sneu 1 Feb. 5,l 1935. I c-.f LLOYD 4 31,990,237

vPIPE WRAPPING MACHINE Filed Jan. 16. '1935 e sheets-sheet 2 afg@ Feb. 5, 1935.

c. 1j. LLOYD PIPE WRAPPING MACHINE Filed Jan. 16, 195s e sheets-sheet 4` Feb. 5, 11935. cfr. LLOYD PIPE; WRAPPING vMAGHINE.'

Filed Jan. 16, 1933 6 Shets-Sheet 5 Feb. 5, 193s.

C. T. LLOYD PIPE WRAPPING MACHINE 6 Sheets-Sheef. 6

Tm Alu @e MQW/6M vPatented Feb. '5, 1935 UNITED STATES AlllrlENT .or-Fic Pira WRAPHNG MACHINE oxyde fr. Lloyd, Los Angeles, assignoi t0 Crane Co., Chicago, 111., a, corporation of Illinoisl Appliation Jannary 1s, 1933, serial No. v651,924 z claims. (Cl. 2424-11) This invention relates to pipe wrapping ma chines of the type in which the pipe is supported between a head stock and a tail stock and rotated thereby while the covering is applied by means of a carriage moved alongside of the pipe in a direction parallel to the axis thereofand at a predetermined speed relatively to the-speed of rotation of the pipe.

It is the purpose of this invention to provide such a machine having relatively few parts and which is fully automatic and capable of handing pipes of various diameters and lengths which may apply any desired number of layers of covering,

which is rapid inoperation and which 'may be controlled by one centralpoint thereby reducing the amount of labor necessary to operate the machine. f

In accordance with this invention, the length of Y pipe to be covered is supported between a relatively stationary head stockv and an adjustable tail stock. A traveling carriage for the covering materials is provided which moves in a direcv tion parallel to the axis of the pipe and upon which is mountedone or more rolls of covering material, together with a reservoir -for the'u'id covering material. Preferably the carriage also includes a control platform for the operator and the necessary controls whereby rotation of the pipe and linear movement of both the tail stock' and carriage are controlled, thus necessitating only one operator for the entire machine after the pipe is placed in position.

To obtain the maximum speed and output from the machine, a driving mechanism which, for simplicity, preferably operated by a single motor for both the carriage and head' stock, so zar-.

ranged that the carriage returns to initial or starting position. at a much greater speed than its movement in covering direction. a

A better-,understanding of my invention will be apparent from `the following description given' Y and driving'mechanism omitting the face plate,

Fig'. 'isanend elevationoithecarriage, Fig. Sis aplanview offthe carriage, Fiz.7isasideelevationoitherriase,.

Fig.-8 is a plan view of the tail stock, Fig. 9 is a side elevation of the tail stock, and l Fig. 10v is a vertical section through the tail stock taken approximately. on line l0-10 of. Fig. 9.

As previously stated, the machine is adapted to support a length of pipe between the head stock and tail stocks, the former oi which also'rotates the pipe. The carriage travels alongside the pipe throughout substantially its entire length4 and lays one are more layers of paper and/or liquid covering material upon thepipe as it is rotated by the h ead stock. A.

Considering rst the head stock-and vdriving mechansm, a.nd with particular reference to Figs.

1, 2, Band 4, the entire machine is supported upon a pair of Ifbeams. 1 to which is secured the head stock indicated generally by 3, by means of'a pair of base-rails 5 secured to the beams .of the length of pipe 12 (Figs. 1 and 6) and support the same. The other end of shaft 10 carries a sprocket 13 by means of which shaft 10 may be rotated to rotate the pipe.

Power for rotatingthe head stock and also the carriage, to be .later described, is supplied from a single reversible motor, 14 driving a Reeves variable speed drivel@ which terminates in a main drive shaft 16 extending longitudinally along the basel of the head stock. Sprocket 13 is driven from shaft 16 by a. chain I7 passing over sprocket 13 and a sprocket 18 secured to the free member of clutch 19 having its fixed member keyed to shaft 16. The free member is driven in what will be termed normal driving direction.

The carriage is also driven from motor 14; and shaft 16 by the following transmission gearing. The normal drive is throughV gear 19st (Figs. 3 and 4) on shaft 16, gear 20 on intermediate shaft 21 which drives a second intermediate shaft 22 carrying 'a friction clutch 23 through gears 24. Shaft 22 drives shaft 25 through change gears 26 which latter shaft drives a cross shaft 27 through bevel gears 28. Shaft 27 in turn drivesv the iinal drive shaft 29 through a second set of change gears .30. The reversefdrive for returning the carriage does not go through gears 19* and 24 but through gears 31 and 32, the former being secured to the free element of a second clutch 33 hav- 2 l mg its other` element sied to shaft 1s and orranged so that the free element and lgear 31 is not driven upon rotation of shaft 16 in normal driving direction. In reverse direction, however, clutch 33 drives gears-,31 and 32 thereby rotating shaft 22,4 clutch 23 being disengaged whereby change gears 26 drive shaft 25 which in turn drives shaft 29, aspreviously described. Omitting gears 19, 20, clutch 23 andA gears 24, causes thedrive'shaft, 29 to be rotated at a much greater l speed than when shaft 16 is rotated in the normal driving direction, the ratio of speeds being preferab1yabouttentoone.

tuating means are of standard construction purchasahle on the commercial market and need not be described. They may be connected into the motor circuit to be operated simultaneously upon reversals of the motor or they may be wired for independent operation as will be well understood bythoseskilled-inthe'art.l

'I'hehe'adstockdrivingmechanismalsoserves `to move the carriage, indicated generally by the reference character 45, and shown more particularly in Figs. 5, 6 and '1. The carriage constitutes `n, moving vehicle for the paper rolls or other sheet covering to be supplied to the pipe axes and for the liquid coating, generally an asphaltum or other bituminous compound. The carriage is mounted upon wheels 47 which travel upon rails `pipe to be 49securedtothetopofbeamslwhichguidethe carriageinadirectionparalleltotheaxisofthe covered.

The carriage is provided with a frame 50 pivoted thereto about a vertical pivot to permit rotation thereabout and carries twol or more spindios'si which oai-ry spools sa :or supporting rous of paper 54 (Fig. 7) or other wrapping material. Friction devices 55 having hand wheels are also shaft!!! second sprocket' (Fig. securedbetweenbeams l atapoint'to the right o f'nny possible right hand position ofnl Aboth rotary and axial movement, the shaft mounted upon wheels 77 traveling on nach. The upper endr of the truckis provided with a hollow stationary shaft or sleeve 79 in which is jurnalled the tail stock shafty 81 carrying one extremity a center piece or face plate Shaft 81 is iournalled, however, in shaft 'I9 f ing urged in one directionby spring means, shown. The truck is driven to the right or 'left by a torque motor 83 driving through a reduction gear 85 and pinion 87 which a toothed rack 89 disposed parallel to and between rails 49. The tail stock may be locked in adjusted position at any time by opening the motor circuit to motor 83 whereby the of the motor to turning and the inherent of the reduction gearing will prevent furthe' movement of the tail stock.

Alimit switch 91 is supported inpositiontohe actuated by a cam 93adjustably mounted upm the end of shaft 8l upon axial movement of shaft 81 after a proper tension has been placed thereon. Limit switch 91 serves to stop motor 83 and therefore retain the'tail stock in position.

The entire machine is preferably cmtrolled from the platform projecting from the carriage inordertopermitasingleoperatortoxidem the carriage and control all parts'of the machine from a position where he can observe the @eration ofthe machine. Por this purpose electrical conduits or trolleys 93 and 95-fed from the head stockend areinsulatinglysecuredtoihesld of thebeams l (Pig. l0) inpositimtobemed lby trolley wheels or sliding brushes 9'! and 99 of theusualtypecarriedbythetailstoeband from the brushes are extendedupthroh a centrai pedestal 101 arisingfromthecarrlageand whichl carries a control panel 102 ai which are mounted the n control' switches, .not illustrated, by vmeans of layer or layers of papa toi aboutthepipeastheplpeisrotated. 'nnsspeed vof theentiremaehineeanbecmtlolledbythe .Reevesdriveandtherelationtmmunentdthf carriagetothespeedctrotationolthepipeean bevregulyted h! set nl einenA carriage. 'l'he necessary electrical control wires gears. f the vhas traversedl'the 'vlengthoIthepipe,themain'motoriareveraedto causereverse movement of the carriage. (tlutch 23v is also disengaged to permit quick return of the carriage due to) the drive being through clutch 33 and the cutting out of certain portions oi the gear transmission, thus speeding up the' operation of the machine. The head stock shaft being driven through one-way clutch 19 will not be rotated upon reverse movement vof the carriage and consequently the pipe will not be rotated upon return movement of the carriage.

After being covered, the pipe may be covered again with one or more layers ot paper by repeating the operations or itv may he removed' and another length oi pipe substituted therefor.

From the foregoing it will be apparent that this invention provides a substantially fully automatic machine due to the three clutches, two

' of which, and if desired-all three of which, may

be automatic in operation. The machine is capable oi great production due in, part at least to the increased return speed of the carriage and furthermore may be controlled by one man from one vantage point. y

Many other points of novelty will be obvious to those skilled in the art from the foregoing description, to whom it will also be apparent that minorchangmaybemadeinthe detailso! construction o! the one illustrative embodiment of this invention without departing from the spirit and scope thereof as denned in the tollowing claims.

I claim:

1. In combination with a wrapping machine having .a iixed head stock provided with a from said head stock, means including a spring arranged to urge the pipe engaging portion of rotary face plate, a tail stock movable toward and the tail stock-toward the head stock, and a limit switch operative upon predetermined yielding of A said spring to stop the'tail stock moving means.

' 2. In combination with-a pipe wrapping machine having a fixed head stock provided with a rotary face plate, .a tail stock movable toward and from said head stock, said tail stock includ said spring to open the driving circuit oi said motor.

CLYDE T. LLOYD. 

